XCB-300II Forced-Air Hot Air Circulating Oven
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Model | XCB-300II |
| Pricing | Available Upon Request |
Overview
The XCB-300II Forced-Air Hot Air Circulating Oven is a precision-engineered thermal aging and dimensional stability testing instrument designed for polymer-based materials in quality control and R&D laboratories. It operates on the principle of forced convection heating—using an internal centrifugal blower to ensure uniform air circulation across the working chamber—thereby minimizing thermal gradients and enabling reproducible high-temperature exposure conditions. This architecture meets fundamental requirements for standardized thermal aging tests specified in ISO 2578 (Plastics — Determination of Thermal Oxidative Stability), ASTM D3045 (Standard Practice for Heat Aging of Plastics Without Load), and GB/T 2918 (Plastics — Standard Atmospheres for Conditioning and Testing). The oven is routinely deployed to evaluate material degradation kinetics, post-heating dimensional changes, and physical property retention in PVC, PE, PP, and other thermoplastic piping systems and structural components.
Key Features
- Forced-air circulation system with adjustable-speed centrifugal blower for consistent temperature distribution (±1.5 °C uniformity at 150 °C, per IEC 60068-3-5)
- LED digital temperature controller with PID algorithm, offering setpoint resolution of 0.1 °C and real-time display of chamber temperature
- Stainless steel interior chamber (300 × 300 × 300 mm W×D×H) resistant to oxidation and thermal stress cycling
- Double-layer insulated door with heat-resistant silicone gasket to minimize thermal leakage and improve energy efficiency
- Over-temperature protection circuit with independent mechanical thermostat (cut-off at 250 °C) compliant with EN 61000-6-2 EMC immunity standards
- Front-access observation window with tempered glass for non-intrusive sample monitoring during operation
Sample Compatibility & Compliance
The XCB-300II accommodates standard test specimens per ISO 3127 (Plastics pipes — Determination of resistance to external blows) and ASTM D2122 (Standard Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings). It supports flat sheet samples up to 280 mm × 280 mm, cylindrical pipe segments up to Ø160 mm × 300 mm length, and irregular extruded profiles within chamber volume constraints. All thermal aging protocols executed on this unit are traceable to documented calibration procedures aligned with ISO/IEC 17025 requirements. The device satisfies essential safety and electromagnetic compatibility criteria per GB 4793.1–2007 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and is suitable for use in GLP-compliant environments when operated under controlled SOPs.
Software & Data Management
While the XCB-300II operates via standalone hardware control, it integrates seamlessly into laboratory data workflows through its analog output (0–5 V DC proportional to chamber temperature) and optional RS-485 Modbus RTU interface (available via accessory module). When connected to validated LIMS or SCADA platforms, temperature logging meets FDA 21 CFR Part 11 requirements for electronic records—including user authentication, audit trail generation, and tamper-evident timestamps. Calibration certificates include NIST-traceable reference points at 60 °C, 100 °C, and 150 °C, with uncertainty budgets reported per ISO/IEC Guide 98-3 (GUM).
Applications
- Thermal aging evaluation of plastic piping systems per ISO 1167 (Plastics pipes and fittings — Pressure testing)
- Determination of linear dimensional change rate after heat exposure (e.g., ASTM D1204, ISO 293)
- Pre-conditioning of polymeric test specimens prior to tensile, impact, or creep testing
- Accelerated life testing of cable jacketing compounds and insulation materials
- Stability assessment of polymer blends and filled composites under oxidative stress
- Validation of thermal processing parameters for extrusion and injection molding QA/QC protocols
FAQ
What is the maximum operating temperature of the XCB-300II?
The rated maximum operating temperature is 250 °C, with continuous duty capability up to 220 °C.
Does the oven support programmable ramp-and-soak cycles?
No—the base model features fixed-setpoint control; programmable multi-step profiles require the optional TC-2000 controller upgrade.
Is the temperature sensor calibrated and certified?
Yes—a factory calibration certificate with as-found/as-left data and uncertainty values is provided with each unit.
Can the XCB-300II be used for moisture content determination?
No—it lacks mass loss monitoring capability; dedicated halogen or infrared moisture analyzers are recommended for that purpose.
What maintenance is required for long-term reliability?
Biannual inspection of blower motor bearings, cleaning of air intake filters, and verification of door seal integrity are advised per the maintenance log included in the operator manual.
